CLEARANCE AND TAIL LIGHTS DON'T WORK

1995 Nissan Sentra

My tail lights and my clearance lights don't work. But the headlamps and the turn signals are working.
I tried installing a window washer light. And I connected the wires to the wires of the turn signal/ clearance light power as I was instructed. After that, the clearance lights and the tail lights stopped working.
I can assume its a fuse. Because the person who installed my new starter didn't connect the ground wire. But the ground wire is just touching the bolt on the started where it should be bolted, but it is not bolted on. Help me out.